SB20240806331 - Amazon Linux AMI update for sudo 

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Main Vulnerability Database SB20240806331

SB20240806331 - Amazon Linux AMI update for sudo

Published: August 6, 2024 Updated: October 25, 2024

Security Bulletin ID SB20240806331
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Out-of-bounds write (CVE-ID: CVE-2022-43995)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary condition within plugins/sudoers/auth/passwd.c when Sudo is configured to use the crypt() password backend (e.g. when passwd authentication is enabled). A local user with access to Sudo  can enter a password of 8 characters or fewer to trigger a heap-based buffer over-read and gain access to sensitive information.


2) Input validation error (CVE-ID: CVE-2023-22809)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists within the sudoedit (aka -e) feature due to insufficient validation of user-supplied input passed in the user-provided environment variables (SUDO_EDITOR, VISUAL, and EDITOR). The problem exists because a user-specified editor may contain a "--" argument that defeats a protection mechanism, e.g., an EDITOR='vim -- /path/to/extra/file' value. A local user can append arbitrary entries to the list of files to process and escalate privileges on the system.


Remediation

Install update from vendor's website.

References